1 /* 2 * Copyright 2009-2011 Oleg Mazurov, Circuits At Home, http://www.circuitsathome.com 3 * MAX3421E USB host controller support 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the authors nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 //HD44780 compatible LCD display via MAX3421E GPOUT support header 31 //pinout: D[4-7] -> GPOUT[4-7], RS-> GPOUT[2], E ->GPOUT[3] 32 // 33 //this code is heavily borrowed from official Arduino source v.0017 34 // link to original http://code.google.com/p/arduino/source/browse/trunk/hardware/libraries/LiquidCrystal/LiquidCrystal.h 35 // 36 #ifndef _Max_LCD_h_ 37 #define _Max_LCD_h_ 38 39 #include <inttypes.h> 40 #include "Print.h" 41 42 // commands 43 #define LCD_CLEARDISPLAY 0x01 44 #define LCD_RETURNHOME 0x02 45 #define LCD_ENTRYMODESET 0x04 46 #define LCD_DISPLAYCONTROL 0x08 47 #define LCD_CURSORSHIFT 0x10 48 #define LCD_FUNCTIONSET 0x20 49 #define LCD_SETCGRAMADDR 0x40 50 #define LCD_SETDDRAMADDR 0x80 51 52 // flags for display entry mode 53 #define LCD_ENTRYRIGHT 0x00 54 #define LCD_ENTRYLEFT 0x02 55 #define LCD_ENTRYSHIFTINCREMENT 0x01 56 #define LCD_ENTRYSHIFTDECREMENT 0x00 57 58 // flags for display on/off control 59 #define LCD_DISPLAYON 0x04 60 #define LCD_DISPLAYOFF 0x00 61 #define LCD_CURSORON 0x02 62 #define LCD_CURSOROFF 0x00 63 #define LCD_BLINKON 0x01 64 #define LCD_BLINKOFF 0x00 65 66 // flags for display/cursor shift 67 #define LCD_DISPLAYMOVE 0x08 68 #define LCD_CURSORMOVE 0x00 69 #define LCD_MOVERIGHT 0x04 70 #define LCD_MOVELEFT 0x00 71 72 // flags for function set 73 #define LCD_8BITMODE 0x10 74 #define LCD_4BITMODE 0x00 75 #define LCD_2LINE 0x08 76 #define LCD_1LINE 0x00 77 #define LCD_5x10DOTS 0x04 78 #define LCD_5x8DOTS 0x00 79 80 class Max_LCD : public Print { 81 public: 82 Max_LCD(); 83 void init(); 84 void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS); 85 void clear(); 86 void home(); 87 void noDisplay(); 88 void display(); 89 void noBlink(); 90 void blink(); 91 void noCursor(); 92 void cursor(); 93 void scrollDisplayLeft(); 94 void scrollDisplayRight(); 95 void leftToRight(); 96 void rightToLeft(); 97 void autoscroll(); 98 void noAutoscroll(); 99 void createChar(uint8_t, uint8_t[]); 100 void setCursor(uint8_t, uint8_t); 101 virtual size_t write(uint8_t); 102 void command(uint8_t); 103 private: 104 void sendbyte( uint8_t val ); 105 uint8_t _displayfunction; //tokill 106 uint8_t _displaycontrol; 107 uint8_t _displaymode; 108 uint8_t _initialized; 109 uint8_t _numlines,_currline; 110 }; 111 112 113 114 115 #endif 116